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Item#: 9SIA85V3CK2471

COOLMAX PS-228 Network/ PC Service Tools

  • PS-228

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  • Specifications
  • Warranty & Returns
  • Reviews

Learn more about the CoolMax PS-228

Warranty, Returns, And Additional Information

Customer Reviews of the CoolMax PS-228

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  • James S.
  • 12/7/2014 8:00:25 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsVery Cooool Tool

Pros: Cool tool to have in your tool bag. Be owing this for over 4 years and still going strong. Cut my troubleshoot down to only minutes. Happy customer and happy

Cons: NA

Other Thoughts: Had a couple of P/S with everything reading good except for the PG. With that valve too low or high, wouldn't send the signal to the motherboard to power up.

Happy customer and happy computer repairman!! :)

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  • Benson F.
  • 1/24/2013 12:39:25 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsHandy Tool.

Pros: Easy to read LCD display, works well, simple to use, good diagnosis tool.

Cons: The center of the tool seems flimsy, perhaps that's just because the tool is so light though. So the pin ends are hardened plastic and the rest of the tool isn't the same thickness.

Other Thoughts: Decent tool, a lot of functionality.

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  • Kenneth K.
  • 12/6/2012 11:33:12 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsUgh

Pros: Good Labeling

Cons: I have HP pc's at work. It recognizes EVERY HP PSU as defective even though they work fine.

Other Thoughts: It works great on my home PSU's (different manufacturers) but the HP PSU's always ring up bad. Luckily when troubleshooting with HP, they sent me a new PSU and motherboard for good measure. I think it was just the motherboard, but won't know because this thing doesn't like them. Go figure. I would have never guessed it would make a difference.

I contacted tech support and they said to return it because it was defective. I did that and the new one did the exact same thing. I doubt I got 2 defective ones in a row. Again, it worked fine on my Corsair PSU at home as well as my POWMAX PSU.

1 out of 1 people found this review helpful. Did you? Yes No

  • Michael M.
  • 10/23/2012 2:19:19 PM
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsWorked for me. :)

Pros: - All of the connections that I need.
- Shows voltage on LCD screen.
- Small and lightweight.
- Accurate readout. (For my unit)
- Fairly cheap.

Cons: - Cheaply made.
- Sharp plastic corners.
- Squeaks when gripping to plug in the connectors.

Other Thoughts: I only needed this to test 1 power supply for my build, so it worked perfectly for that 1 power supply. Since it passed I can now feel confident that my build will go smoothly and be powered sufficiently.

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  • Roger S.
  • 10/10/2012 2:49:07 PM
  • Ownership: 1 month to 1 year

5 out of 5 eggsDr. Power II is only worthy investment.

Pros: None.

Cons: I warned folks in an earlier review to NOT buy this unit or any of the re-badged/re-branded units that look the same, because they ARE THE SAME. These will burn up, with smoke and that nasty smell, if you put them on a PSU that has too high an output. I FORGOT to mention that the Dr. Power II by Thermaltake DOESN'T burn up when measuring the same PSU. That's what happened to me. First I burned out one of these, then bought one of the Dr. Power II units, and measured the very same PSU. I was intimidated of course, but when it handled the measurement of the bad PSU without a hitch, just displaying a red warning screen and indicating a higher than normal output, I knew I had to spread the word as far and as fast as I could. You've been very fairly warned. DO NOT BUY!

Other Thoughts: Buy the Dr. Power II by Thermaltake. Unlike these cheap excuses for test equipment, the Dr. Power II won't burn up when it hits a bad PSU putting out too much power. There, I've done what I can to warn you.

1 out of 4 people found this review helpful. Did you? Yes No

4 out of 5 eggsHome User

Pros: Bought this to test for bad PSU's. Don't expect PSU's to fail all that often, so use 4, 5 times/year.

Primary Use:
1st time, flaky desktop, suspected PSU. Bought this to test. 12 volt fluctuated. Not sure about "correct" reading so tried on another PSU from another desktop; that one had stable voltage. Replaced PSU; new one had stable voltages; problem disappeared.

Secondary Use:
Also use to test brand new PSU's for DOA's. Yes, it does NOT apply any kind of load, more of a "sanity check". Allows me to buy a PSU for a future build when PSU is on sale, check, and if a problem, RMA to Newegg within return period. Then can use for a later build. Not fool-proof by any means, just more of "I've done what I can" warm feeling. Cheaper than a test rig for hardware testing.

Cons: Not exactly sturdy, but then again, I only use 4 or 5 times a year. For professional use, I'd get a better model. For home use, sanity checks, this works for me. Accurate enough in my experience for that decision tree branch: is PSU the problem, or look elsewhere?

Other Thoughts: Good:
Also can save you from yourself. Pulled an hdd from a server to replace. Restarted server; nothing. Checked connections; nothing. Easy enough to pull psu and verify; it was good. Reinstalled PSU NEXT morning, and rechecked connections. Only then did I notice the %$@# 2 pin MICRO connection wire from power switch to mobo slightly pulled out. Must have snagged on hdd when removed. Reseated, power on, no problem. Having one of these just a quick way to eliminate 1 system problem: bad PSU.

Bad:
Your friends will want to borrow for their similar problems. Just make sure you set a loan time limit.

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  • Roger S.
  • 9/27/2012 8:51:11 AM
  • Ownership: 1 month to 1 year

1 out of 5 eggsNOT RECOMMENDED!

Pros: NONE!

Cons: This design is the same as all the rest except for the Thermaltake Dr. Power models. It WILL BURN UP if the psu has too high an output!
NOT RECOMMENDED! This is in addition to the difficulty of plugging in cables, the cheap build quality and the difficulty of holding it.
YOU'VE BEEN WARNED!

Other Thoughts: This design is the same as all the rest except for the Thermaltake Dr. Power models. It WILL BURN UP if the psu has too high an output!
NOT RECOMMENDED! This is in addition to the difficulty of plugging in cables, the cheap build quality and the difficulty of holding it.
YOU'VE BEEN WARNED!

0 out of 5 people found this review helpful. Did you? Yes No

  • Justin C.
  • 5/21/2012 11:43:56 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsStrange Little Box

Pros: Tests power supplies! Great for modular units. Tests everything out there, except for those Mini-ATX connectors. Easily visible display, on/off button.

Cons: First unit had to be RMA'ed. Second unit, was giving weird reading sometimes until it fell out of the cabinet. Now it works fine.

Other Thoughts: Had to buy one of these to replace an aging ATX 20-pin connector tester. Great for 20/24 pin, plus the extra 4/8 pin connectors. And useful for testing specific power cables, with its Molex/Sata/Floppy connector pins.

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  • Allen S.
  • 4/13/2012 10:00:15 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsDo NOT Buy

Pros: Nice LCD and show all the voltages, but, are they accurate?

Cons: Although several of my PSUs passed, this thing failed 2 brand new PSUs with PG as no good. I RMA the PSUs, came back and they are still no good. I got suspicious and went to a local store and bought a different tester. And the new PSUs are good. I suspect the ones I sent back are good as well. Bad tool to give false positive! Probably can't handle modular cables.

Other Thoughts: I am writing this review hoping to help some avoid buying this. Pay a little extra and get the T*****take Dr. Power 2. You won't regret it. Why a get testing tool that gives false positive? My first Newegg RMA. Waiting for my refund.

4 out of 4 people found this review helpful. Did you? Yes No

  • Anonymous
  • 4/6/2012 8:40:39 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsNifty little tool!

Pros: Digital readout and the ability to test SATA, MOLEX, CPU 2P and 8P, PCI-E 6P and 8P as well as 20/24 Pin Main Board Power, and even Floppy power. This truly does it all! The main pro is the simple fact that it displays actual real time voltage, instead of a high or low, is what makes this product great!

Cons: My main concern is that the build quality of the Main Power Connector feels somewhat suspect. I've been very careful with it sofa, and no problems yet... but -1 egg for some wobble.

Other Thoughts: While this does normally display numbers, it's not smart enough to detect that (if using a single rail) there is no second 12v rail, and it gives off a very shrill beeping to notify you that your PSU is suspect. Also if a power supply is too far gone it won't actually display voltage, it will simply display HH or LL for the reading. Not enough of an issue to lose and egg, but enough to mention. As a computer repair shop I use this tool a few times a week, and so far I don't know how I've made it so long without one. Gone are the days of using a voltmeter to check individual power output! Thanks Newegg and Thanks a ton Coolmax for such a nifty little tool!!

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CoolMax > 
Item#: 9SIA85V3CK2471
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